60 lines
1.6 KiB
PHP
60 lines
1.6 KiB
PHP
<?php
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/**
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* Copyright 2015 OpenStack Foundation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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namespace utils\services;
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use utils\model\Identifier;
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use Zend\Crypt\Hash;
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/**
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* Class UniqueIdentifierGenerator
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* @package utils\services
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*/
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abstract class UniqueIdentifierGenerator implements IdentifierGenerator
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{
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/**
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* @var ICacheService
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*/
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private $cache_service;
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/**
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* @param ICacheService $cache_service
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*/
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public function __construct(ICacheService $cache_service)
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{
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$this->cache_service = $cache_service;
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}
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/**
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* @param Identifier $identifier
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* @return Identifier
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*/
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public function generate(Identifier $identifier){
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do
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{
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$key = sprintf("%s.%s", $identifier->getType(), Hash::compute('sha256', $this->_generate($identifier)->getValue()));
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}
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while(!$this->cache_service->addSingleValue($key, $key));
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return $identifier;
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}
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/**
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* @param Identifier $identifier
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* @return Identifier
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*/
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abstract protected function _generate(Identifier $identifier);
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} |